Why is oxygen usually an oxidizing agent?
A. It is a very electronegative element.
B. It likes to be oxidized.
C. It does not undergo reduction.
D. It is very abundant and so it is easier to react than nitrogen.
E. all of the above
Answer: A
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An igneous rock texture in which larger crystals are enclosed in a groundmass of much finer-grained material is called:
a) aphanitic texture b) phaneritic texture c) polyphonic texture d) porphyritic texture e) mylonitic texture
The occurrence of persistent phytoplankton blooms in an area where runoff from fertilized farmland enters the ocean
is an example of ____________. Fill in the blank(s) with the appropriate word(s).
Two species have separate ranges but use the same food resources. However, their ranges overlap in one area
It is found in the area of overlap that the species have evolved separate anatomical specializations that reduce interspecific competition for food. This is an example of A) biotic transformation. B) competitive exclusion. C) resource partitioning. D) character displacement.
The principle of isostasy refers to:
a) the difference in the strength of the mantle versus the crust b) the relationship between regional elevations and thickness of crustthe relationship between regional elevations and thickness of crust c) how the outer core differs from the inner core d)how the upper mantle differs from the lower mantle